Golf-ball.



1 To.790,252. I PATENTED MAY 16, 1905.

' L. J. DU MAHAUT.

GOLF BALL.

APPLICATION FILED DBO. 2, 1903.

v INVENTOR:

WITNESSES:

By A ztameys,

ness and a saving in weight.

Iva 790,252.

UNITED STATES Patented May 16, 1905.

PATENT OFFICE.

LOUIS J. DU MAHAUT, OF NEW YORK, N. Y., ASSIGNOR TO L. J. DU MAHAUTCOMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

I'GOLF-BALL.

SPECIFICATION forming part of Letters Patent No. 790,252, dated May 16,1905.

Application filed December 2,1903. Serial No. 183,537.

To all whom, it may concern.-

Be it known that I, LOUIS J. DU MAHAUT, a

citizen of the United States, residing in the borough of Manhattan,city, county, and State of New York, have invented certain new and'useful Improvements in Golf-Balls, of which the following is aspecification.

This invention provides an improved construction of golf-ball which inits preferred form is characterized by the employment of a central coreof cork, affording lightness with great resilience, and an intermediatelayer or cushion of elastic rubber formed with projections at its outersurface and compressed within the usual outer covering or jacket of hardor tough rubber.

Figure 1 of the accompanying drawings is a mid-section of the ball. Fig.2'is an elevation of the intermediate cushion. Fig. 3 is a section ofthis cushion. Fig. Ais an elevation of the inner core.

Referring to the drawings, A is the inner core, B the intermediatecushion, and O the outer covering or jacket.

The inner core A instead of being made of rubber or rubber compositionor gutta-percha is preferably of cork, which affords a high degree ofresiliency with the requisite firm- It may, however, be made of anysuitable material.

The intermediate cushion B is preferably made of soft elastic rubber orrubber compo.- sition of suitable density and of ahigh degree ofresiliency. It is preferably formed as a spherical shell with its outersurface diversified to form a succession of resilient projections, whichare preferably in the form of knobs, each one of which constitutes aseparate compressible cushion, these knobs being separated by spacesofsuflicient width to allow of their lateral expansion when compressedby pressure from the exterior. The form of these knobs .or projectionsmay be greatly varied. The hemispherical form shown is preferred. V

The outer jacket O is of the usual construction, being formed of a hard,tough, tenacious vulcanized rubber or rubber composition or ofgutta-percha or kindred material.

In construction the inner core A may be supported by pins or otherwisein the center of the mold in which the cushion B is being molded andvulcanized, or the cushion B may be molded in halves, which may becemented or vulcanized together, with the core A between them. The outerjacket is applied and vulcanized under compression in the ordinarymanner. It is thus contracted upon and compresses the intermediatecushion, slightly fiattening the projections thereof.

My improved golf-ball is designed to afford the maximum resilience'andminimum weight, while being cheaper in construction than thoseheretofore made.

What I claim is 1. Agolf-ball having an inner member having resilientprojections, and an outer jacket contacting with such projections, saidouter jacket and said inner member being spaced apart between suchprojections.

2. A golf-ball having an inner member of elastic rubber havingprojections, and an outer jacket contacting with such projections, saidouter jacket and inner member being spaced apart between suchprojections.

3. A golf-hall having a cushion of elastic rubber having projectingportions and contiguous spaces into which such portions may expand, saidspaces being normally unoccupied by portions of the ball.

- I. A golf-ball having a central core and an outer jacket, and betweenthe two a member having resilient portions and contiguous spaces, saidspaces being unoccupied by said outer jacket, and being adapted toreceive such projections when they are expanded laterally.

5. A golf-ball having a central core and an outer jacket, and betweenthe two a'cushion consisting of a spherical shell of elastic rubberformed with projections and contiguous spaces, said spaces beingunoccupied by said outer jacket.

6. A golf-ball having an inner member formed with elastic projections,and an outer jacket having a substantially undiversified inner surface,said inner member being under compression within said jacket.

7 A golf-ball comprising a central core, an

outer jacket, and an intermediate cushion of elastic rubber havingprojections on its outer surface, and spaces into which said projectionsmay laterally expand, said cushion being under compression within saidjacket, and said spaces being unoccupied by said jacket.

8. A golf-ball comprising a central core, an outer jacket, and anintermediate cushion of elastic rubber having on its outer surfacerounded projections and spaces into which said projections may laterallyexpand, said cushion being under compression within said jacket, andsaid spaces being unoccupied by said jacket.

In witness whereof I have hereunto signed 5 my name in the presence oftwo subscribing witnesses.

LoUIs J. DU MAHAUT.

Vitnesses:

EUGENE V. MYERs, THOMAS F. VVALLACE.

